Fresh-keeping storage drawer and refrigerator

Abstract

The invention provides a fresh-keeping storage drawer and a refrigerator. The fresh-keeping storage drawer is used for being arranged in a storage chamber of the refrigerator, and comprises a fixing assembly, a drawer assembly and a control assembly, and the fixing assembly is fixedly arranged relative to the storage chamber; the drawer body is arranged in a drawable mode relative to the fixing assembly, and a magnetic field fresh-keeping space used for containing stored objects is formed in the drawer body; the magnetic field device is configured to form a magnetic field in the magnetic field fresh-keeping space, and the magnetic field device comprises a static assembly arranged on the fixed assembly; and the movable assembly is arranged on the drawer body and is configured to be connected with the static assembly after being pushed into the storage chamber in place along with the drawer body, so that a magnetic conduction path is formed on the outer side of the magnetic field fresh-keeping space. According to the scheme, the structure is simple, assembly is convenient, the magnetic field in the magnetic field fresh-keeping space is more uniform, the fresh-keeping storage environment is effectively improved, and meanwhile, release of the magnetic field to the outside of the fresh-keeping storage drawer can be reduced.

Description

Technical Field

[0001] The invention relates to a refrigeration and freezing storage device, in particular to a fresh-keeping storage drawer and a refrigerator. Background Art

[0002] The fresh-keeping storage effect of household refrigeration and freezing equipment such as refrigerators has become an important indicator for measuring the performance of such equipment. Ingredients such as fresh meat, fish and shrimp are prone to juice loss during storage, resulting in poor taste and darker color.

[0003] Existing studies have found that magnetic fields have a great influence on the formation of ice crystals during the freezing process. When using a magnetic field to freeze food, the magnetic field limits the free path of water molecules to a certain extent, which manifests as the breaking of hydrogen bonds in water molecule clusters. During the phase change process, the growth of the crystal nucleus is inhibited, and the growth rate of ice crystals is higher than the migration rate of water molecules. The resulting ice crystals are smaller, which causes less damage to cells, reduces the juice loss rate, and better preserves the nutrition and taste of the food. Applying a magnetic field to assist in the processing of food in a refrigerated environment can reduce the degree of supercooling of the food. For example, the freezing temperature of beef is -2°C. When the magnetic field acts on the beef, the freezing temperature of the beef can drop to -5°C, so that the beef can be refrigerated at a lower temperature and remain fresh.

[0004] In household refrigerators, a drawer-type storage structure is generally used to achieve fresh-keeping storage. However, the movable feature of the drawer brings difficulties to the arrangement of the magnetic field components. Therefore, the prior art has failed to solve the technical problem of applying a uniform and reliable magnetic field in the fresh-keeping storage drawer. Summary of the invention

[0005] An object of the present invention is to achieve a uniform and reliable magnetic field in a fresh food storage drawer.

[0006] A further object of the present invention is to make the external closed-loop magnetic path of the magnetic field preservation space smooth.

[0007] Another further object of the present invention is to bring the magnetic field element closer to the stored object so that the magnetic field can be more fully utilized.

[0008] In particular, the present invention provides a fresh-keeping storage drawer, which is used to be arranged in a storage compartment of a refrigerator and comprises:

[0009] A fixed assembly, fixedly disposed relative to the storage compartment;

[0010] The drawer body is arranged to be drawable relative to the fixed assembly, and a magnetic field preservation space is formed inside the drawer body for placing stored objects;

[0011] A magnetic field device is configured to form a magnetic field in the magnetic field preservation space, and the magnetic field device includes:

[0012] A stationary component is disposed on the fixed component;

[0013] The movable component is arranged on the drawer body and is configured to be connected with the static component after the drawer body is pushed into the storage compartment to form a magnetic conductive path outside the magnetic field preservation space.

[0014] Optionally, the movable assembly includes a first magnetic field member, and the first magnetic field member is disposed on the bottom plate of the drawer body;

[0015] The fixing assembly includes a drawer top cover, which is located on the top of the drawer body after the drawer body is pushed into the storage compartment;

[0016] The stationary component comprises a second magnetic field component, which is arranged on the top cover and is opposite to the second magnetic field component with a magnetic field preservation space therebetween.

[0017] Optionally, one or more first magnetic conductive connecting parts are arranged on the drawer body, a first end of each first magnetic conductive connecting part is connected to the first magnetic field member, and a second end thereof forms a connecting end;

[0018] One or more second magnetic conductive connecting parts are arranged on the fixed component and are arranged one-to-one with the first magnetic conductive connecting parts. The first end of each second magnetic conductive connecting part is connected to the second magnetic field component, and the second end forms a mating end adapted to the connecting end. The mating end is connected to the corresponding connecting end after the drawer body is pushed into the storage compartment, so that the second magnetic conductive connecting part and the corresponding first magnetic conductive connecting part form a magnetic conductive path.

[0019] Optionally, the first magnetic conductive connecting portion is arranged on the left and right lateral side plates of the drawer body, and the second end thereof is arranged on the guide rail of the drawer body;

[0020] The second magnetic conductive connecting portion is arranged from the second magnetic field component along the left and right sides of the drawer body, and the second end thereof extends toward the corresponding first magnetic conductive connecting portion to form a matching end.

[0021] Optionally, a first magnetic conductive connecting portion is respectively provided on the left and right lateral side panels of the drawer body, and the first magnetic conductive connecting portion is located in the middle of the drawer body in the pulling direction.

[0022] Optionally, a plurality of first magnetic conductive connecting parts are respectively arranged on the left and right lateral side panels of the drawer body, and the plurality of first magnetic conductive connecting parts are arranged at intervals along the pulling direction of the drawer body.

[0023] Optionally, the first magnetic field component includes:

[0024] A first magnetic conductive plate is disposed below the bottom plate of the drawer body and connected to the first end of the first magnetic conductive connecting portion;

[0025] The first magnetic source sheet is disposed on a side surface of the first magnetic conductive plate, and

[0026] The second magnetic field component comprises:

[0027] A second magnetic conductive plate is disposed above the top cover and connected to the first end of the second magnetic conductive connecting portion;

[0028] The second magnetic source sheet is arranged on a side surface of the first magnetic conductive sheet.

[0029] Optionally, the first magnetic source sheet is attached to a side of the first magnetic conductive plate facing the bottom plate of the drawer body;

[0030] The second magnetic source sheet is attached to a side of the second magnetic conductive plate facing the top cover.

[0031] Optionally, the first magnetic source piece and the second magnetic source piece are respectively permanent magnet pieces that are uniformly magnetized.

[0032] Optionally, the first magnetic conductive plate, the second magnetic conductive plate, the first magnetic conductive connecting portion, and the second magnetic conductive connecting portion are respectively made of high magnetic permeability materials.

[0033] Optionally, the fixing assembly further comprises a barrel body, which has a forward opening; the drawer body is arranged in the barrel body in a manner that it can be pulled out from the forward opening.

[0034] The second magnetic conductive connecting portion is arranged close to the inner side of the barrel wall of the barrel body.

[0035] Optionally, the magnetic field is configured to have an effective magnetic field strength range of 10-100 GS and an effective spacing range of 60-240 mm.

[0036] According to another aspect of the present invention, there is also provided a refrigerator comprising any one of the above-mentioned fresh-keeping storage drawers.

[0037] Optionally, the refrigerator further comprises:

[0038] The box body at least defines a fresh-keeping storage compartment therein, and the box body is provided with a refrigeration air duct at the rear side of the fresh-keeping storage compartment; and

[0039] The fresh-keeping storage drawer is arranged in the fresh-keeping storage room. The fresh-keeping storage room is provided with an air supply port and an air return port for connecting to the refrigeration air duct on the back panel behind the fresh-keeping storage drawer, so that the cold air in the refrigeration air duct is introduced into the air supply port, and is sent back to the refrigeration air duct from the return air port after heat exchange with the fresh-keeping storage drawer.

[0040] Optionally, a heat exchange air duct surrounding the fresh-keeping storage drawer is formed in the fresh-keeping storage room. The heat exchange air duct is arranged around the fresh-keeping storage drawer from the air supply port and is finally connected to the return air port.

[0041] In the fresh-keeping storage drawer and refrigerator of the present invention, the static component in the magnetic field device is arranged on a fixed component fixed in the storage room, and the movable component in the magnetic field device is arranged on the drawer body and is configured to move with the drawer body. After the drawer body is pushed into the storage room, the movable component is connected to the static component to form a magnetic conductive path outside the magnetic field fresh-keeping space. The movable component is arranged on the drawer body closer to the stored objects, so that the magnetic field is more fully utilized; the static component is arranged on the fixed component to avoid interference with the drawer body structure and simplify the structure. The magnetic field device forms a magnetic field that is beneficial to fresh-keeping storage in the magnetic field fresh-keeping space of the drawer. The magnetic field helps to improve the storage quality, shorten the freezing time, reduce the juice loss rate and nutrient loss of food, reduce the number of microorganisms and bacteria, and extend the fresh-keeping period. The magnetic conductive path is outside the magnetic field preservation space. It adjusts the magnetic field distribution by converging the magnetic field lines outside the magnetic field preservation space, making the magnetic field inside the magnetic field preservation space more uniform, effectively improving the fresh-keeping storage environment. At the same time, it can reduce the release of the magnetic field to the outside of the fresh-keeping storage drawer and reduce interference with other external components (such as avoiding magnetization of other components).

[0042] Furthermore, in the fresh-keeping storage drawer and refrigerator of the present invention, the first magnetic field component is arranged on the bottom plate of the drawer body, close to the stored objects. The second magnetic field component is arranged on the top cover of the drawer, does not move with the drawer body, and can avoid blocking the access port of the drawer body; the first magnetic conductive connecting part and the second magnetic conductive connecting part respectively form a connecting section and a mating end at the end, and the mating end is connected to the corresponding connecting end after the drawer body is pushed into the storage compartment, so that the second magnetic conductive connecting part and the corresponding first magnetic conductive connecting part form a magnetic conductive path. The first magnetic conductive connecting part and the second magnetic conductive connecting part are connected in the magnetic circuit by pulling out the drawer, which avoids the setting of magnetic connection components with complex structure and large space occupation, facilitates assembly and production, and improves the utilization efficiency of the magnetic field fresh-keeping space.

[0043] Furthermore, the fresh-keeping storage drawer and refrigerator of the present invention are simple to assemble and have improved reliability in long-term use by optimizing the position and structure of the first magnetic conductive connecting part and the second magnetic conductive connecting part.

[0044] Furthermore, the refrigerator of the present invention improves the method of cooling and supplying air to the fresh-keeping storage drawer, combines the magnetic field preservation technology with the high-precision and high-stability refrigeration technology, greatly improves the preservation effect, and prolongs the fresh-keeping storage time.

[0045] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0047] Figure 1 is a schematic diagram of a fresh-keeping storage drawer according to an embodiment of the present invention;

[0048] Figure 2 yes Figure 1 An exploded view of the components of the crisper drawer shown;

[0049] Figure 3 is a front cross-sectional view of a fresh-keeping storage drawer according to an embodiment of the present invention;

[0050] Figure 4 is a side view of a magnetic field device in a fresh-keeping storage drawer according to an embodiment of the present invention, when the drawer body is pulled out;

[0051] Figure 5 It is a side view of a magnetic field device in a fresh-keeping storage drawer according to an embodiment of the present invention, when the drawer body is pushed into the barrel body;

[0052] Figure 6 is a side view of a magnetic field device in a fresh-keeping storage drawer according to another embodiment of the present invention, when the drawer body is pushed into the barrel body;

[0053] Figure 7 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0054] Figure 8 yes Figure 7 The refrigerator shown is a schematic diagram with the upper door hidden;

[0055] Fig. 9 is a schematic diagram of a refrigeration air duct system of a refrigerator according to an embodiment of the present invention;

[0056] Fig.10 It is a schematic diagram of a refrigeration air duct system of a refrigerator according to another embodiment of the present invention. DETAILED DESCRIPTION

[0057] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0058] In the description of the present embodiment, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For example, except for individual explicit definitions of other orientations, in the present embodiment, the direction from the refrigerator body toward the door body is the front, the direction relative to the door body toward the body is the back, the direction toward the ground on which the refrigerator is installed is the bottom, and the direction opposite to the ground is the top.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] Furthermore, it should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Figure 1 Schematic diagram of a fresh-keeping storage drawer 30 according to an embodiment of the present invention. The fresh-keeping storage drawer 30 is used to be arranged in a storage compartment of a refrigerator, and the storage compartment can be a refrigerated storage compartment, a variable temperature storage compartment, or a frozen storage compartment. The fresh-keeping storage drawer 30 can be arranged in an independently arranged compartment for realizing magnetic field preservation, or can be arranged in a part of the storage compartment.

[0062] The fresh-keeping storage drawer 30 may generally include a fixing assembly 31 and a drawer body 320. The fixing assembly 31 is fixedly arranged relative to the storage compartment, that is, after the fixing assembly 31 is installed inside the refrigerator, its position is relatively static and will not be moved during normal use. The drawer body 320 is retractable relative to the fixing assembly 31, and a magnetic field fresh-keeping space for placing stored items is formed inside the drawer body 320.

[0063] Figure 2 yes Figure 1 An exploded view of the components of the fresh food storage drawer 30 is shown; Figure 3 FIG. 4 is a front cross-sectional view of a fresh-keeping storage drawer 30 according to an embodiment of the present invention. Figure 4is a side view of the magnetic field device 40 in the fresh-keeping storage drawer 30 according to one embodiment of the present invention when the drawer body 320 is pulled out; Figure 5 1 is a side view of the magnetic field device 40 in the fresh-keeping storage drawer 30 according to an embodiment of the present invention when the drawer body 320 is pushed into the barrel body 310.

[0064] The fixing assembly 31 may include a drawer top cover 315 and a barrel 310. The barrel 310 has a forward opening. The barrel 310 described in this embodiment refers to the barrel 310 disposed outside the drawer body 320 and defining a magnetic field fresh-keeping space 330 together with the drawer body 320. In some embodiments, other outer shells may be further disposed outside the barrel 310, that is, the barrel 310 may be used as the inner layer of the multi-layer shell of the fresh-keeping storage drawer 30, and may also be referred to as an inner barrel or barrel liner.

[0065] In the description of this embodiment, unless otherwise specified, the relative position relationship of other components is described based on the state that the drawer body 320 is pushed into the barrel body 310. Those skilled in the art should understand that when the drawer body 320 is pulled out of the barrel body 310 to expose the top space for taking and placing items, the relative positions of the components arranged on the drawer body 320 and the barrel body 310 will be displaced in the pulling direction.

[0066] The drawer top cover 315 is located on the top of the drawer body 320 after the drawer body 320 is pushed into the storage compartment. Generally speaking, the drawer top cover 315 is located on the inner side of the top wall of the barrel body 310. In some embodiments, the drawer top cover 315 and the top wall of the barrel body 310 can be fixedly connected, or set as an integral component, or the drawer top cover 315 directly serves as the top wall of the barrel body 310.

[0067] The magnetic field device 40 is used to form a magnetic field in the magnetic field preservation space 330. The magnetic field device 40 includes: a stationary component 42 and a movable component 41. The stationary component 42 is arranged on the fixed component 31 and will not be moved during normal use. The movable component 41 is arranged on the drawer body 320 and is configured to be connected with the stationary component 42 after the drawer body 320 is pushed into the storage compartment to form a magnetic conductive path outside the magnetic field preservation space 330.

[0068] The movable component 41 is arranged on the drawer body 320 so as to be closer to the stored object, so as to make fuller use of the magnetic field. The stationary component 42 is arranged on the fixed component 31 so as to avoid interference with the structure of the drawer body 320 and simplify the structure. It should be understood by those skilled in the art that the magnetic field strength will decay accordingly with the increase of the distance from the magnetic source. Therefore, in order to ensure that the magnetic field of the magnetic field device 40 can be used as fully as possible in the magnetic field preservation space, the movable component 41 can be as close to the stored object as possible.

[0069] The magnetic field device 40 forms a magnetic field in the magnetic field preservation space 330 of the drawer 30 that is conducive to preservation and storage. The magnetic field helps to improve the storage quality, shorten the freezing time, reduce the juice loss rate and nutrient loss of food, reduce the number of microorganisms and bacteria, and extend the preservation period. The magnetic conductive path formed by the stationary component 42 and the movable component 41 can adjust the magnetic field distribution by converging the magnetic field lines outside the magnetic field preservation space 330, so that the magnetic field in the magnetic field preservation space 330 is more uniform, which effectively improves the preservation and storage environment. At the same time, it can reduce the release of the magnetic field to the outside of the fresh-keeping storage drawer 30 and reduce interference with other external components (for example, avoiding magnetization of other components, etc.).

[0070] The movable component 41 includes a first magnetic field component 410 disposed on the bottom plate of the drawer body 320. The stationary component 42 includes a second magnetic field component 420 disposed on the top cover 315 and opposite to the first magnetic field component 410 with the magnetic field preservation space 330 interposed therebetween.

[0071] In some embodiments, the first magnetic field component 410 may include: a first magnetic conductive plate 411 and a first magnetic source sheet 412. The second magnetic field component 420 may include: a second magnetic conductive plate 421 and a second magnetic source sheet 422. The first magnetic conductive plate 411 may be disposed below the bottom plate of the drawer body 320. Alternatively, the first magnetic conductive plate 411 may also be embedded inside the bottom plate of the drawer body 320. The first magnetic source sheet 412 is attached to one side of the first magnetic conductive plate 411. Generally speaking, the first magnetic source sheet 412 is attached to the inner side of the first magnetic conductive plate 411, that is, the first magnetic source sheet 412 may be attached to the side of the first magnetic conductive plate 411 facing the bottom plate of the drawer body 320 (or facing the magnetic field preservation space 330). The first magnetic source sheet 412 is attached to the bottom plate of the drawer body 320, thereby greatly reducing the distance from the stored objects.

[0072] The second magnetic conductive plate 421 can be arranged on the top cover 315. For example, the second magnetic conductive plate 421 can be arranged above the top cover 315, or embedded in the inside of the top cover 315. The second magnetic source sheet 422 is arranged on a side surface of the first magnetic conductive plate. Generally speaking, the second magnetic source sheet 422 is arranged on the inner side of the second magnetic conductive plate 421, that is, the second magnetic source sheet 422 can be arranged on the side of the second magnetic conductive plate 421 facing the drawer body 320.

[0073] The first magnetic source sheet 412 and the second magnetic source sheet 422 can use permanent magnetic sheets with uniform magnetization, for example, they can be made of permanent magnetic materials with a certain flexibility, for example, they can use rubber magnetic sheets with flexibility made by bonding ferrite magnetic powder and synthetic rubber and then undergoing a calendering molding process.

[0074] In some embodiments, the size of the first magnetic source sheet 412 may be slightly smaller than the size of the first magnetic conductive plate 411, and the size of the second magnetic source sheet 422 may be slightly smaller than the size of the second magnetic conductive plate 421. The first magnetic source sheet 412 may be attached to the central area of ​​the first magnetic conductive plate 411. The second magnetic source sheet 422 may be attached to the central area of ​​the second magnetic conductive plate 421. Thus, the first magnetic conductive plate 411 may have an extension portion (exceeding the edge of the coverage area of ​​the first magnetic source sheet 412) on the periphery of the first magnetic source sheet 412; the second magnetic conductive plate 421 may have an extension portion (exceeding the edge of the coverage area of ​​the second magnetic source sheet 411) on the periphery of the second magnetic source sheet 422. The first magnetic conductive plate 411 and the second magnetic conductive plate 421 distribute the magnetic field uniformly.

[0075] The first magnetic source sheet 412 and the first magnetic conductive plate 411 and the second magnetic source sheet 422 and the second magnetic conductive plate 421 are required to fit tightly to ensure reliable magnetic connection. In some embodiments, a magnetic conductive adhesive may be applied between the first magnetic source sheet 412 and the first magnetic conductive plate 411 and between the second magnetic source sheet 422 and the second magnetic conductive plate 421 to achieve better adhesion between the two. The magnetic conductive adhesive may be silicone magnetic conductive adhesive or epoxy magnetic conductive adhesive.

[0076] In other embodiments, the first magnetic field component 410 and the second magnetic field component 420 may also be provided with electromagnetic components (not shown in the figure), for example, the electromagnetic components are provided in a ring shape, and are provided around the periphery of the first magnetic source sheet 412 and the second magnetic source sheet 422. That is, the first magnetic source sheet 412 and the second magnetic source sheet 422 may be provided in the inner ring of the electromagnetic component. The electromagnetic field generated by the electromagnetic component may compensate for the weaker magnetic field in the edge area of ​​the permanent magnetic sheet, so that the entire magnetic field preservation space 330 covered by the permanent magnetic sheet can achieve a uniform magnetic field, thereby improving the food preservation effect of the entire preservation space. Thereby overcoming the situation that the magnetic field in the edge area of ​​the permanent magnetic sheet is weak and the magnetic field strength is uneven. In addition, the electromagnetic component may also be provided close to the permanent magnetic sheet, for example, provided on the inner side of the permanent magnetic sheet, or provided between the permanent magnetic sheet and the magnetic conductive plate.

[0077] The magnetic field device 40 may further include one or more first magnetic conductive connection parts 431 and one or more second magnetic conductive connection parts 432. The first magnetic conductive connection parts 431 and the second magnetic conductive connection parts 432 are arranged in a one-to-one correspondence. After the drawer body 320 is pushed into the storage compartment, the first magnetic conductive connection parts 431 and the second magnetic conductive connection parts 432 are magnetically connected to form a complete magnetic conductive path.

[0078] The first magnetic conductive connecting part 431 is disposed on the drawer body 320, and the first end of each first magnetic conductive connecting part 431 is connected to the first magnetic field member 410, and the second end thereof forms a connecting end 4311. The first end of the first magnetic conductive connecting part 431 can be connected to the edge of the first magnetic conductive plate 411 in the first magnetic field member 410.

[0079] The second magnetic conductive connection part 432 is disposed on the fixed component 31. The first end of each second magnetic conductive connection part 432 is connected to the second magnetic field member 420, and the second end thereof forms a mating end 4321 adapted to the connection end 4311. The mating end 4321 is connected to the corresponding connection end 4311 after the drawer body 320 is pushed into the storage compartment, so that the second magnetic conductive connection part 432 forms a magnetic conductive path with the corresponding first magnetic conductive connection part 431. The first end of the second magnetic conductive connection part 432 can be connected to the edge of the second magnetic conductive plate 421 in the second magnetic field member 420. In some embodiments, the first end of the first magnetic conductive connection part 431 abuts against the extension of the first magnetic conductive plate 411, but has a magnetic gap with the first magnetic source sheet 412; the first end of the second magnetic conductive connection part 432 abuts against the extension of the second magnetic conductive plate 421, but has a magnetic gap with the second magnetic source sheet 422. Thus, while forming an external magnetic circuit, interference with the magnetic field distribution in the magnetic field preservation space 330 is avoided.

[0080] The first magnetic conductive plate 411, the second magnetic conductive plate 421, the first magnetic conductive connecting portion 431, and the second magnetic conductive connecting portion 432 are respectively made of high magnetic permeability materials. The high magnetic permeability material can be a ferromagnetic material with a magnetic permeability of about 100 or more, which is much greater than the air environment and has a low coercive force. The magnetic field will preferentially pass through the high magnetic permeability material.

[0081] The barrel body 310 is also provided with other functional components, such as the slide rail 311 and other components that cooperate with the drawer body 320. In order to avoid structural interference between the first magnetic conductive connection part 431 and the second magnetic conductive connection part 432 and other functional components on the barrel body 310. The first magnetic conductive connection part 431 can be arranged on the left and right lateral side panels of the drawer body 320, and its second end is arranged at the guide rail of the drawer body 320. The second magnetic conductive connection part 4321 is arranged along the left and right sides of the drawer body 320 from the second magnetic field part 420, and its second end extends toward the corresponding first magnetic conductive connection part 431 to form a matching end 4321. Thereby, the first magnetic conductive connection part 431 and the second magnetic conductive connection part 4321 are combined at a position where structural interference occurs, such as a guide rail. The connection end 4311 and the matching end 4321 can be provided with a slot, an elastic clamping structure, a butterfly spring, and other reliable plug-in structures to improve the reliability of the connection. After the drawer body 320 is pushed into the barrel body 310 and in place, the connecting end 4311 and the matching end 4321 are reliably connected to ensure smooth connection of the magnetic circuit.

[0082] Figure 2-5In the illustrated embodiment, a first magnetic conductive connection part 431 may be respectively provided on the left and right lateral side panels of the drawer body 320, and the first magnetic conductive connection part 431 is located in the middle of the drawer body 320 in the pulling direction. Correspondingly, the second magnetic conductive connection part 432 is located in the middle of the front-to-back depth direction of the barrel body 310 to ensure the uniformity of the magnetic field of the magnetic field preservation space 330. In some alternative embodiments, due to possible structural interference of other components, the first magnetic conductive connection part 431 and the second magnetic conductive connection part 432 may also be provided at a position deviated from the center along the pulling direction, and closer to the front or rear side, but compared with the structure of providing the first magnetic conductive connection part 431 and the second magnetic conductive connection part 432 in the center along the pulling direction, this setting method deviating from the central position will have a smaller effect on the uniformity of the magnetic field.

[0083] Figure 6 It is a side view of the magnetic field device 40 in the fresh-keeping storage drawer 30 according to another embodiment of the present invention, when the drawer body 320 is pushed into the barrel body 310. In this embodiment, a plurality of first magnetic conductive connecting parts 431 are respectively arranged on the left and right lateral side panels of the drawer body 320, and the plurality of first magnetic conductive connecting parts 431 are arranged at intervals along the pulling direction of the drawer body 320. Thus, a plurality of magnetic conductive paths are arranged on each lateral peripheral wall (left wall and right side wall) of the drawer body 320, which are respectively arranged at intervals along the pulling direction of the drawer body 320. The figure shows the situation where two first magnetic conductive connecting parts 431 are arranged on each side. When the scheme of this embodiment is actually applied, those skilled in the art can select the number of first magnetic conductive connecting parts 431 arranged on each side as needed, such as three or more.

[0084] The magnetic field generated by the magnetic field device 40, which is beneficial to fresh-keeping storage, is configured to have an effective magnetic field strength range of 10-100GS, and can be further set to 40GS-60GS, for example 10GS, 20GS, 40GS, 60GS, 80GS, 100GS, etc. The effective spacing range of the magnetic field is 60-240mm, and the effective spacing range of the magnetic field is 60-240mm, that is, the magnetic field can reach the above-mentioned intensity requirement within a distance range of 60mm to 240mm from the magnetic source component.

[0085] Figure 7 is a schematic diagram of a refrigerator 10 according to an embodiment of the present invention; Figure 8 yes Figure 7 The refrigerator 10 shown is a schematic diagram without the upper door 11. The refrigerator of this embodiment generally includes a box 12, a door 11, and a refrigeration system (not shown in the figure). The box 12 may include components such as an outer shell, an inner liner, a heat insulation layer, and a decorative panel.

[0086] At least one storage compartment with an open front side may be defined in the box body 12, usually multiple, such as a refrigerated storage compartment 121, a frozen storage compartment 123, a variable temperature storage compartment 122, and the like. Those skilled in the art can configure the number, function, and layout of specific storage compartments according to requirements. The number of door bodies 11 can match the number of storage compartments, so that the storage compartments can be opened one by one. The door body 11 can also be in the form of a swing door, a double door, a side sliding door, a drawer door, and the like. The number and function of the specific storage compartments can be configured according to pre-determined requirements. Depending on the layout of the storage compartments, the refrigerator can be set as a single-door refrigerator or a multi-door refrigerator, and the multi-door refrigerator can include: a double-door refrigerator, a three-door refrigerator, a double-door refrigerator, a French refrigerator, an Italian refrigerator, and the like. Figure 7 and Figure 8 The French style four-door refrigerator shown is only an example.

[0087] In some embodiments, the storage temperature of the refrigerated storage compartment 121 may be 0 to 9°C, or, for example, 2 to 7°C; the storage temperature of the frozen storage compartment 123 may be -22 to -14°C, or -20 to 16°C, and the variable temperature storage compartment 122 is disposed between the refrigerated storage compartment 121 and the frozen storage compartment 123. The variable temperature storage compartment 122 may be adjusted according to demand to store appropriate food, or serve as a fresh-keeping storage compartment.

[0088] Multiple storage rooms can be spatially divided by racks, shelves, drawers, etc. to achieve corresponding storage functions, such as chilled, frozen, dry storage, etc. One or more fresh-keeping storage drawers 30 can be arranged in the refrigerator 10 of this embodiment. In some optional embodiments, the fresh-keeping storage drawer 30 can be arranged in one or more of the above-mentioned multiple storage rooms, and the long-term high-quality cold preservation of food materials such as meat and fish can be achieved through magnetic field and temperature control. For example, the fresh-keeping storage drawer 30 can be arranged in any one of the refrigerated storage room 121, the frozen storage room 123, and the variable temperature storage room 122. For another example, the fresh-keeping storage drawer 30 can also be arranged in multiple refrigerated storage rooms 121, the frozen storage room 123, and the variable temperature storage room 122 at the same time, that is, the fresh-keeping storage drawers 30 are respectively arranged in multiple different storage rooms at the same time. For another example, multiple fresh-keeping storage drawers 30 can also be arranged in a storage room at the same time as needed. Figure 8 An example of a fresh-keeping storage drawer 30 is shown in the refrigerated storage compartment 121. The fresh-keeping storage drawer 30 is a drawer structure storage container. In addition to the fresh-keeping storage drawer 30, other drawer storage containers can also be set in the refrigerated storage compartment 121.

[0089] The refrigerator 10 of this embodiment may be an air-cooled refrigerator. Figure 8Schematic diagram of the refrigeration air duct system of a refrigerator 10 according to an embodiment of the present invention. An air duct system is provided in the cabinet 12, and the air duct system delivers the air passing through the heat exchanger (evaporator) to each storage compartment. The air duct system is generally provided at the back of the cabinet 12, and is composed of an air duct cover plate, foam parts, etc. The refrigeration system can be divided into a multi-system and a single system according to the number of evaporators in the refrigeration system. The multi-system includes multiple evaporators, and each evaporator is responsible for the refrigeration of part of the storage compartment. Figure 8 Taking the refrigeration air duct system shown as an example, a refrigeration refrigeration air duct 131 is formed at the back of the refrigerated storage compartment 121. A refrigeration evaporator 133 is arranged in the refrigeration refrigeration air duct 131, and a refrigeration refrigeration fan 132 promotes the formation of a refrigerated airflow in the refrigerated storage compartment 121. A freezing refrigeration air duct 135 is formed at the back of the frozen storage compartment 123 and the variable temperature storage compartment 122. A freezing evaporator 137 is arranged in the freezing refrigeration air duct 135, and a freezing refrigeration fan 136 promotes the formation of a freezing airflow in the frozen storage compartment 123 and / or the variable temperature storage compartment 122.

[0090] The refrigeration evaporator 133 and the freezing evaporator 137 can be controlled to start and stop respectively. For example, when the temperature of the frozen storage room 123 reaches the refrigeration start condition, the freezing evaporator 137 and the freezing refrigeration fan 136 can start refrigeration. The refrigerated airflow is sent to the frozen storage room 123 from the position where the freezing evaporator 137 is located through the air supply ports at various positions of the frozen storage room 123. After the refrigerated refrigeration airflow is sent into the frozen storage room 123, it exchanges heat with the stored objects to cool them down. Then it returns to the position where the freezing evaporator 137 is located through the return air port of the frozen storage room 123, completing the airflow cycle.

[0091] For another example, when the temperature of the refrigerated storage compartment 121 reaches a refrigeration start condition, the refrigeration evaporator 133 and the refrigeration fan 132 may start refrigeration.

[0092] The refrigerated airflow is sent to the refrigerated storage room 121 from the location of the refrigerated evaporator 133 through the air gates at different locations of the refrigerated storage room 121, and then the refrigerated airflow flows forward from the refrigerated storage room 121, exchanges heat with the stored items inside the refrigerated storage room 121, and cools them. The refrigerated airflow then returns from the refrigerated storage room 121 to the location of the refrigerated evaporator 133 through the return air port, completing the airflow cycle. A plurality of air gates may be provided in the refrigerated refrigeration air duct 131, and the plurality of air gates may adjust the delivery area of ​​the refrigerated refrigeration airflow. Among the plurality of air gates, a fresh-keeping refrigeration air gate 134 may be included, and the fresh-keeping refrigeration air gate 134 is specifically used to adjust the on / off and size of the refrigeration airflow of the fresh-keeping storage drawer 30. Alternatively, in some embodiments, a centralized airflow distribution device may be provided in the refrigeration duct 131, which is connected to the air ducts leading to different areas of the refrigerated storage compartment 121, and can distribute the refrigerated airflow leading to different areas of the refrigerated storage compartment 121. The fresh-keeping storage drawer 30 may be provided with a dedicated refrigeration airflow channel for independent refrigeration control.

[0093] The refrigeration start and stop conditions of the refrigeration evaporator 133 and the freezing evaporator 137 are well known to those skilled in the art, and those skilled in the field of refrigerators can set the refrigeration start and stop conditions according to refrigeration requirements. The refrigerator of this embodiment makes special improvements to the refrigeration method of the fresh-keeping storage drawer 30.

[0094] The fresh-keeping storage drawer 30 is arranged in a fresh-keeping storage compartment (which can be a part of the refrigerated storage compartment 121 or can be independent of the refrigerated storage compartment 121). The fresh-keeping storage compartment is provided with an air supply port 316 and an air return port 317 for connecting to the refrigeration air duct 131 on the back panel at the rear of the fresh-keeping storage drawer 30, so that the air supply port 316 introduces cold air in the refrigeration air duct 131, and after heat exchange with the fresh-keeping storage drawer 30, the cold air is returned to the refrigeration air duct from the air return port 317.

[0095] An insulation layer 124 is provided between the fresh-keeping storage compartment where the fresh-keeping storage drawer 30 is located and the adjacent refrigerated storage compartment 121. The insulation layer 124 can set the fresh-keeping storage temperature of the fresh-keeping storage compartment to be different from the storage temperature of the surrounding storage space. The fresh-keeping storage temperature can be set to be lower than the refrigerated storage temperature, and the characteristic of being difficult to freeze under supercooling in a magnetic field environment is utilized to achieve a longer fresh-keeping storage period. For example, the fresh-keeping storage temperature can be set to -2 degrees Celsius to 0 degrees Celsius.

[0096] When the fresh-keeping refrigeration damper 134 is opened or the centralized airflow distribution device is turned on to supply air to the fresh-keeping storage compartment where the fresh-keeping storage drawer 30 is located, the refrigerated airflow is sent into the fresh-keeping storage drawer 30 from the air supply port. In this embodiment, the refrigerated airflow does not directly enter the magnetic field fresh-keeping space 330, but exchanges heat around the fresh-keeping storage drawer 30 to prevent the refrigerated airflow with a lower temperature from directly contacting the stored items inside the magnetic field fresh-keeping space 330. One way for the refrigerated airflow to surround the fresh-keeping storage drawer 30 is that the airflow enters the top of the fresh-keeping storage drawer 30 from the air supply port 316, and then the airflow flows from the back to the front of the fresh-keeping storage drawer 30. The top of the fresh-keeping storage drawer 30 then flows from the front of the fresh-keeping storage drawer 30 from top to bottom, and finally the airflow returns to the return air port 317 from the front to the back along the bottom of the fresh-keeping storage drawer 30. The refrigeration air path of the above-mentioned fresh-keeping storage drawer 30 surrounds the entire fresh-keeping storage drawer 30. Without entering the magnetic field fresh-keeping space 330 and thus not directly contacting the stored objects, sufficient heat exchange can be achieved to evenly cool the fresh-keeping storage drawer 30.

[0097] A heat exchange air duct 340 surrounding the fresh-keeping storage drawer 30 is formed in the fresh-keeping storage room. The heat exchange air duct 340 extends forward from the air supply port 316 along the side wall (e.g., top wall) of the fresh-keeping storage drawer 30 to the front of the fresh-keeping storage drawer 30 and then extends backward along the other side wall (e.g., bottom wall) to the return air port 317.

[0098] In other optional embodiments, the heat exchange air duct 340 may also adopt other surrounding methods, for example, from the left side to the front, from the front of the drawer to the right side, and then from the right side back to the back side, that is, to horizontally surround the fresh-keeping storage drawer 30. That is, the heat exchange air duct 340 extends forward from the air supply port 316 along the left side wall (or right side wall) of the fresh-keeping storage drawer 30 to the front of the fresh-keeping storage drawer 30 and then extends backward along the right side wall (or left side wall) to the return air port 317.

[0099] In order to improve the refrigeration efficiency, it is generally necessary to send the refrigeration airflow into the storage space. Even in order to avoid local overcooling caused by direct current blowing, the technical means generally used are to use holes with smaller apertures to send air into the drawer storage space or to set up a special air guide channel inside the storage space. The fresh-keeping storage drawer 30 of this embodiment creatively proposes a solution of using a surrounding air path to achieve indirect refrigeration instead of sending the refrigeration airflow into the magnetic field fresh-keeping space 330, which better combines the magnetic field to improve the fresh-keeping effect and overcome the existing technical prejudices of those skilled in the art.

[0100] Fig.101 is a schematic diagram of a refrigeration air duct system of a refrigerator 10 according to another embodiment of the present invention. In this embodiment, a refrigeration evaporator 137 is used to refrigerate a refrigerated storage compartment 121, a variable temperature storage compartment 122, and a frozen storage compartment 123. A refrigeration air duct 131 is formed at the back of the refrigerated storage compartment 121. A refrigeration air duct 135 is formed at the back of the frozen storage compartment 123 and the variable temperature storage compartment 122. A refrigeration evaporator 137 is provided in the refrigeration air duct 135, and a refrigeration fan 136 promotes the formation of a refrigeration airflow.

[0101] A refrigeration damper 138 may be provided between the freezing refrigeration air duct 135 and the cold storage refrigeration air duct 131. When the cold storage compartment 121 needs to be refrigerated separately, the refrigeration damper 138 is opened, and the dampers at the air outlets of the frozen storage compartment 123 and the variable temperature storage compartment 122 can be all closed, so that the refrigeration airflow formed by the freezing refrigeration fan 136 can be sent into the refrigeration refrigeration air duct 131 through the refrigeration damper 138. When the frozen storage compartment 123 or the variable temperature storage compartment 122 needs to be refrigerated separately, the refrigeration damper 138 is closed, and the dampers at the air outlets of the frozen storage compartment 123 and the variable temperature storage compartment 122 are opened accordingly, so that the refrigeration airflow formed by the freezing refrigeration fan 136 can be sent into the frozen storage compartment 123 and the variable temperature storage compartment 122. When the refrigerated storage compartment 121 and the frozen storage compartment 123 need to be refrigerated at the same time, the refrigerated air door 138 and the air door at the air outlet of the frozen storage compartment 123 can be opened, and the refrigerated air flow flows simultaneously in the frozen refrigeration air duct 135 and the refrigerated refrigeration air duct 131. The refrigeration system of the refrigerator 10 can adjust the frequency of the compressor to adjust the refrigeration capacity of the evaporator to match the refrigeration requirements of different storage compartments.

[0102] The refrigerated storage compartment 121 is also provided with an air supply port 316 and an air return port 317 for connecting to the refrigeration air duct 131 on the back plate behind the fresh-keeping storage drawer 30, so that the cold air in the refrigeration air duct 131 is introduced into the air supply port 316, and is returned to the refrigeration air duct through the air return port 317 after heat exchange with the fresh-keeping storage drawer 30.

[0103] An insulation layer 124 is provided between the fresh-keeping storage compartment where the fresh-keeping storage drawer 30 is located and the adjacent refrigerated storage compartment 121. The insulation layer 124 can set the fresh-keeping storage temperature of the fresh-keeping storage compartment to be different from the storage temperature of the surrounding storage space. The fresh-keeping storage temperature can be set to be lower than the refrigerated storage temperature, and the characteristic of being difficult to freeze under supercooling in a magnetic field environment is utilized to achieve a longer fresh-keeping storage period. For example, the fresh-keeping storage temperature can be set to -2 degrees Celsius to 0 degrees Celsius.

[0104] When the fresh-keeping refrigeration damper 134 is opened or the centralized airflow distribution device is turned on to supply air to the fresh-keeping storage compartment where the fresh-keeping storage drawer 30 is located, the refrigerated airflow is sent into the fresh-keeping storage drawer 30 from the air supply port. In this embodiment, the refrigerated airflow does not directly enter the magnetic field fresh-keeping space 330, but exchanges heat around the fresh-keeping storage drawer 30 to prevent the refrigerated airflow with a lower temperature from directly contacting the stored items inside the magnetic field fresh-keeping space 330.

[0105] A heat exchange air duct 340 surrounding the fresh-keeping storage drawer 30 is formed in the fresh-keeping storage room. The heat exchange air duct 340 extends forward from the air supply port 316 along the side wall (e.g., top wall) of the fresh-keeping storage drawer 30 to the front of the fresh-keeping storage drawer 30 and then extends backward along the other side wall (e.g., bottom wall) to the return air port 317.

[0106] The refrigerator of this embodiment improves the method of cooling and supplying air to the fresh-keeping storage drawer 30, combines the magnetic field fresh-keeping technology with the high-precision and high-stability refrigeration technology, greatly improves the fresh-keeping effect, and prolongs the fresh-keeping storage time.

[0107] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A fresh-keeping storage drawer, used to be arranged in a storage compartment of a refrigerator, and comprising: A fixing assembly, fixedly arranged relative to the storage compartment; The drawer body is arranged to be drawable relative to the fixing assembly, and a magnetic field preservation space is formed inside the drawer body for placing stored objects; A magnetic field device is configured to form a magnetic field in the magnetic field preservation space, and the magnetic field device comprises: A stationary component, disposed on the fixed component; The movable component is arranged on the drawer body and configured to be connected with the static component after the drawer body is pushed into the storage compartment to form a magnetic conductive path outside the magnetic field preservation space.

2. The fresh-keeping storage drawer according to claim 1, wherein The movable assembly includes a first magnetic field member, and the first magnetic field member is arranged on the bottom plate of the drawer body; The fixing assembly includes a drawer top cover, and the drawer top cover is located on the top of the drawer body after the drawer body is pushed into the storage compartment; The stationary component includes a second magnetic field component, which is disposed on the top cover and is opposite to the second magnetic field component with a magnetic field preservation space therebetween.

3. The fresh-keeping storage drawer according to claim 2, wherein One or more first magnetic conductive connecting parts are arranged on the drawer body, a first end of each of the first magnetic conductive connecting parts is connected to the first magnetic field member, and a second end thereof forms a connecting end; One or more second magnetic conductive connecting parts are arranged on the fixed component and are arranged one-to-one with the first magnetic conductive connecting parts. The first end of each second magnetic conductive connecting part is connected to the second magnetic field member, and the second end thereof forms a mating end adapted to the connecting end. The mating end is connected to the corresponding connecting end after the drawer body is pushed into the storage compartment, so that the second magnetic conductive connecting part and the corresponding first magnetic conductive connecting part form a magnetic conductive path.

4. The fresh-keeping storage drawer according to claim 3, wherein The first magnetic conductive connecting portion is arranged on the left and right lateral side plates of the drawer body, and the second end thereof is arranged on the guide rail of the drawer body; The second magnetic conductive connection portion is arranged from the second magnetic field component along the left and right sides of the drawer body, and the second end thereof extends toward the corresponding first magnetic conductive connection portion to form the matching end.

5. The fresh-keeping storage drawer according to claim 4, wherein The first magnetic conductive connecting portion is respectively arranged on the left and right lateral side panels of the drawer body, and the first magnetic conductive connecting portion is located in the middle of the drawer body in the pulling direction.

6. The fresh-keeping storage drawer according to claim 4, wherein A plurality of the first magnetic conductive connecting parts are respectively arranged on the left and right lateral side panels of the drawer body, and the plurality of the first magnetic conductive connecting parts are arranged at intervals along the pulling direction of the drawer body.

7. The fresh-keeping storage drawer according to claim 3, wherein The first magnetic field component comprises: A first magnetic conductive plate is disposed below the bottom plate of the drawer body and connected to the first end of the first magnetic conductive connecting portion; The first magnetic source sheet is arranged on a side surface of the first magnetic conductive plate, and The second magnetic field component comprises: A second magnetic conductive plate is disposed above the top cover and connected to the first end of the second magnetic conductive connecting portion; The second magnetic source sheet is arranged on a side surface of the first magnetic conductive plate.

8. The fresh-keeping storage drawer according to claim 7, wherein The first magnetic source sheet is attached to a side of the first magnetic conductive plate facing the bottom plate of the drawer body; The second magnetic source sheet is attached to a side of the second magnetic conductive plate facing the top cover.

9. The fresh-keeping storage drawer according to claim 7, wherein The first magnetic source sheet and the second magnetic source sheet are respectively permanent magnetic sheets that are uniformly magnetized.

10. The fresh-keeping storage drawer according to claim 7, wherein The first magnetic conductive plate, the second magnetic conductive plate, the first magnetic conductive connecting portion, and the second magnetic conductive connecting portion are respectively made of high magnetic permeability materials.

11. The fresh-keeping storage drawer according to claim 3, wherein: The fixing assembly further comprises a barrel body, wherein the barrel body is provided with a forward opening; the drawer body is arranged in the barrel body in a drawable manner from the forward opening. The second magnetic conductive connecting portion is arranged close to the inner side of the barrel wall of the barrel body.

12. The crisper storage drawer according to any one of claims 1 to 11, wherein The magnetic field is configured such that the effective magnetic field strength ranges from 10 to 100 GS and the effective spacing ranges from 60 to 240 mm.

13. A refrigerator, comprising: A fresh-keeping storage drawer according to any one of claims 1 to 12.

14. The refrigerator according to claim 13, further comprising: A box body, at least defining a fresh-keeping storage compartment inside thereof, and the box body is provided with a refrigeration air duct at the rear side of the fresh-keeping storage compartment; and The fresh-keeping storage drawer is arranged in the fresh-keeping storage room, and the fresh-keeping storage room is provided with an air supply port and an air return port for connecting to the refrigeration air duct on the back plate at the rear of the fresh-keeping storage drawer, so that the cold air in the refrigeration air duct is introduced into the air supply port, and is sent back to the refrigeration air duct from the air return port after heat exchange with the fresh-keeping storage drawer.

15. The refrigerator according to claim 14, wherein A heat exchange air duct surrounding the fresh-keeping storage drawer is formed in the fresh-keeping storage room. The heat exchange air duct is arranged around the fresh-keeping storage drawer from the air supply port and is finally connected to the return air port.

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